{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753616",
    "entityType": "User",
    "nonce": "0x50eebb29594944acfed8ce73add60fef499a0b65241d697b84fe3d909a27ecbc",
    "signature": "0x17da1dfaa6c0ef6a7d6c10ef1ecdde36e1a1474656655d8b6af04c0b044438d82976770cefa990a3b51f2e3edaf6865378d27c094669210be20d00e265a049c91c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}